For all chapters permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with the Invariant Sections being "Preface" and "Credits", with the Front-Cover Texts being "Linux Infrared HOWTO", and with the Back-Cover Texts being the section "About the Document and the Author". A copy of the license is included in the section entitled "GNU Free Documentation License".